net/igc: fix Rx error counter for bad length

[ upstream commit c69abf6 ]

When the size of a packet in Rx channel is less than the minimum
or greater than the maximum, the packet will be simultaneously
counted by RLEC(Receive Length Error Count) and
RUC(Receive Under Size Count)/ROC(Receive Oversize Count) registers.

This patch fixes the issue of counting a length error packet twice
when counting the total number of received error packets.

Fixes: e6defdf ("net/igc: enable statistics")

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
Acked-by: Haiyue Wang <haiyue.wang@intel.com>

drivers/net/igc/igc_ethdev.c

@@ -1904,8 +1904,7 @@ eth_igc_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *rte_stats)
 
 	/* Rx Errors */
 	rte_stats->imissed = stats->mpc;
-	rte_stats->ierrors = stats->crcerrs +
-			stats->rlec + stats->ruc + stats->roc +
+	rte_stats->ierrors = stats->crcerrs + stats->rlec +
 			stats->rxerrc + stats->algnerrc;
 
 	/* Tx Errors */